# a=30
# if a > 20
#     print("变量a大于20")
# else：
#     print("变量a不大于20")
#
# score = eval(input("请输入成绩分数"）
# if  score >=60：
#     print("成绩及格")
#     if score > =90:
#        print("成绩很好")
#     else:
#         print("成绩一般")
#
# score = eval(input("请输入成绩"))
# if  score>=60:
#     print("成绩及格")
#     if  score> = 90：
#         print("成绩很好")
#     else:
#     print("成绩一般")
# eval：
#      print("成绩不合格")、
#      if  score<30:
#          print("成绩极差")
#      else:
#          print("成绩较差")
#
# score = eval(input("请输入成绩"))
# if  score>=90:
#     print("成绩优秀")
# elif score > = 80:
#     print("成绩良好")
# elif score > = 70:
#     print("成绩中等")
# elif score > = 60:
#     print("成绩较好")
# else:
#     print("成绩不及格")
#   float
#     if a > 20
#              ^
# SyntaxError: expected ':'
#
# Process finished with exit code 1

a = eval(input("年份:"))
if a% 4 == 0 and a % 100 != 0 or a % 400 == 0:
    print("闰年")
else:
    print("不是闰年")
